Automobile jack



Sept. 15, 1925.

O. W. WOOD AUTOMOBILE JACK Filed oct. 29, 1925 2 Sheets-Shan 1 Sept. 15, 1925.

O. W. WOOD AUTOMOBILE JACK Filed Oct. 29, 1923 2 Sheets-Sheet 2 /NVENTDR l2 W V000 Patented Sept. l5, 1925.k

` UNITED STATES 1,553,886 PATENT oFFlcE.

OTIS W. WOOD, `0F SAN FRANCISCO, CALIFORN'IILA.V

v AUTOMOBILE JACK.

Application led October 29, 1923. Serial No. 671,413.

To all whom t may concern:

Be it known that I, OTIsW. VVooD, a citizen of the United States, residing at San Francisco, in the county-ofSan Francisco 'and State of California, have invented new and useful Improvements in Automobile IJacks, of which the following is a specifica- `tion. y r

This invention relates to improvements in automobile jacks ofthe type such as comprise avwheeled frame supporting liftingk and loweringk mechanism and are used in 4garages and automobile repair shops for the purpose of quickly lifting and moving kinto various positions automobiles andy like vehicles. Y 'T v One of the objects of the invention is vto provide ajack of the lcharacter described Another object isto provide a novel op Vf eratingy mechanism fork the` jack, rkwhich mechanism includes a handlel that serves not` only as almeans for moving the jack bodily into. different positions but as `a means for operating the lifting andlowering mechanism,i'it being possible withthis arrangement, by grasping fa single element as a handle for moving the jack bodily to ,op"

erate the lifting and lowering :mechanism without removing thehand from said, element. Y

Another object of vide an automobile jack of the character described` Which'is constructed so that while the jack isbeing movedk into the desired o! With the above and .otheriobjects view,

the'inventionfurther consists in the combif nation of the elements of the' parts .thereof as illustrated in -the accompanying drawings, described in the accompanying speci-4 fication, yit being that minor changes in size, detail and proportion of the parts may be resorted to as required with-KA out departing from the spirit of the invention as defined in the claims hereto appended. i

Referring to the drawings: l A

Fig. 1 represents a side elevation of a jackL constructed in accordance with my invention, said vehicle being broken for the sake of clearness 'of illustration.

Fig. 2 represents a fragmentary vertical sectional 'view mechanism. f

Fig. `3 represents a bottom plan view of a part ofthe housing for the lifting and of the lifting and lowering lowering mechanism.

Fig. 4 represents a front elevation of the handle and operating member u combined, belng shown'm part 1n section.

l Referring tothe embodiment of the in-v vention shown in the accompanyingfdrawings, there 1s provided a frame generally designated 1s which frame comprises a housing 2, supported by rollers fmounted on an axle 4 which is carried by the rear portion of the housing. Extending from` the `fore part of the housing is a tubular tongue 5,

`theforward portion of which tube supports an upwardlyy and outwardly curved bracket.

6. An upright bearing 7 is provided at the outer end of this bracket and receives the upright swivel pin 8 of a caster 9. On the upper portion of the bracket, 6 a short horizontal shaft 10 is journaled and at the outer end of this shaft is attached a sleeve 11 hav- Y ing pivot pins 12 projecting outwardly from opposite `sides thereof. Mounted on these pins and held in place by nuts 13 are the forked ends 14 of a combined operating lever and handle 15. On the other end of 1 this member 15l there is provided a short the invention' is to pro- Y crank 16. This crank 16 serves as a grip y when the member 15 is employed as a handle in moving the jack upwardly into different positions. It also serves as a means member is tubular and extends downwardly its upper end to a pointf spacedf above its" lower end and receives an auxiliary screw 27 which, 'suppoitsyanff elevator plate "28, this platel being adapted-to 4engage;l a portion ofk an automobile: ini` the lifting and lowering thereo.=V-The gear 19 is driveir-'by'a bevel pinion 29 which is fixed to one end ofa" shaft 30, which shaftextends out through a f. bearing Slvormed iirthei` upper part of the 'I housing and has auniversal joint connection i tends upwardlyiiand forwardly'to-the rear f end of the shaftl 10 :at-whichV point itis yconnectedwith ysaid shaft by universaljoint 34.'4 Thus it .will be seen that on,rotationfofthel slia'tY-lO,A the shafts 33 andlwill-befturiied so that tlie'pinionQS) Vw'ill'rotateftlie gear=20 and operate the liftingI and lowering mechanismw'i- As a fmeans for4 controlling fthefoperation" of the screw membersyhere isffprovidedfa* slidingdetent orkey 36 mounted ina sleeve 37 disposed in a bore 38'formed infthef--lower casting-1.7 This detentiiis*` inclined `and adapted! atvitsfoiwardfendwhich is pointed:y as at 39, .toengage inria verticalgroove 40 formed-in-thefmain screw124.` r,lieV keyrSG is normally lurgedin positionto engageriir said groove by anAeXpansionispring'4l mounted' within the; sleeve, one end of lwhich spring engages fai' shoulder-42orr'the key and the otherend l'ofwvhich efngagesgthe inner/end: of

astufing bona, 43 which closes the Aouter end? of the bore and throughA which stulingibox the keyf extends.:V YGonnected:with the'outer'f end the f'key isfan'* operatingrod 44 `fwhicli f extends upwardlyr below-the shaft 33- t'a-nd is pivotedi as",- at- 45 i tof. an; operating lever 46,? whichfilever isin turn pivotedik as at'y 47 on4 To 4operate the4 jack, the handle'ffll is graspedinforderito move thejack into de= sired position and' while so -moving the j ack,

the handle `may 'be' turned fin order to" start the part 02E- tlieautoniobifle tobe'fengaged Onriotation @of thefhandle 15, thefsliaft-s l0;

33 and-30--and pinionf=29-rotate and cause the gear 20';v toiotate `finil a yclockwise direce tion.

screw is held against turning-and onwrotabodilyz -moving with it the-iauxiliary screw 27 and elevator iplate 28. This movemenjtis continued .until the elevator pla-ter: engages the work and may be continued.nifl` it is dee-v Inasmuch as the key 36 fengages:1in-y v the lgroove l in j the, main-f t screw, said Y' main lsired to: Qlift the automobile-'or Vwork but slightlys: When it is desired to lift the automobile on Work, the operator grasps the lever 46 andswings it towards him so as to retractor withdraw`the`ke'y from the groove 70 -in themain screw. On moving the lever past center, the key will be held disengaged,

I claim: v a i l. A ack of the character described com- `prising a wheeled'frame, aanember'adapted '75 to engage xa i party of an automobilel to beil 'liftech 'mechanism for vraisingland lowering r said member including L a; shaft 'directly as# sociatedf'with'said meclianismyanother shaft adjacentnth'ef,onwardipart odi-'fthe frame; amg() connecting;shaft'7 universal joints" connecting the connecting shaft with the rst two shaftsw` 72 A iand azffcombined crank fand handle Vmember pivotedto'the second'namedi shaft:

2. .An automobilejack oliftheflcliaracterde` 85 scribed lcomprising a: iframe; sa; liftingff and lowering-imechan'ism adj acer-1t` one endfo"Y Ithe Jframe, wheels 'supportingy the; frame vat` one i i end, aibracket. extending upwardly `from-'theVV i l Nother end of the frame, a wheel carriedby the' bracket, fnieans :for operating the lifting 'l and lowering mechanism: comprising a shaft i fon the Lframe@ adj acentftheliftingandI lower-Y A ing mechanism leand operativelyconnected -therewith,fzanother i shaft i carried the 95 fbracket, a third shaft, universal joints coniiecting the` third l' shaft -witlrtheayirst namedV 'shaftsif-and "at i crankvi pivot'ed to' Lthe second1 I* -named@shaftii:fr Y i i 8. Ariiautomobilezjack ofthecharacteidei00 i scribedfcomprising afirame, azilitingi'and -f loweringlmechanism "adjacent` one.` end ofy theV v frame, :wheels supporting "the: frame atI one end, 'a bracketrextendingupwardly from the- -Votheriend o/the framegia wheelcarried by, 1 the bracketg-meansilforfoperating the. lifting y and lowering mechanism "comprising afsh'atVv v on the frame adjacentlthelifting andl lowering :mechanisinand operatively associat'edi i therewith;4 anotherr i"shaftfoarried by'Y the 110 bracket, afthird:shaftiuniversal"joints'cornectingft-he, third shaft with the first namedl f i shaftsyundffa'meinberpivotedltoathe second named shaft andvservingasa"eo1nbined han` wdle for moving the mechanism into diferentvli fj'positionsfand as? a cranklfor iotatingi'said the movement" offtheaelevatorw platel towards 1" 4'. An automobilejack of the characterde "scribedf comprising ifa' iframe; a` iliftingand "flowering-mechanism1 adgacentffone end of 120 1 the frame', i'wflieelsf,supporting` fthe: frame at s ione end; albraeketrextending iupwardlyf.fromfV *i the other end off-thefframe, anwheelcarried Y f -v by the bracket, means for operating thefli'ft= tion kof the' threaded :boss 22beingapart` of the main,-gear,"said mainserewfisflifted ving Y and lowering` mechanismqcomprising 1 125 1lowering-f"aiiechanism I and operatively vconoonnectngthe third- L-sliaft 'with the `first 4130 named shafts and a member pivoted to the second named shaft and having a crank portion on its outer end.

5. A jack comprising a frame, a gear rotatable on the frame and 'having a screw threaded central aperture, means supported by the frame for rotating said gear, a tubular screw threaded member the screw threads of which engage with the screw threads of said aperture and which is pro- V vided with internalscrew threads, an auxiliary screw engaging the internal screw threads of said tubular member, an elevator plate on the upper end of said auxiliary f screw, said tubular screw having a vertical groove therein', a detent carried by the frame and withdrawablyengaged in said groove, spring means for holding said detent in place and means for withdrawing thevdetent from engagement of the groove.

OTIS W. WOOD. 

